Surface acoustic wave devices

Details Surface acoustic wave devices Surface acoustic wave devices

H - Electricity

01

L

349/59.1

H01L 41/08 (2006.01)

Patent

CA 1273702

SURFACE ACOUSTIC WAVE DEVICES Abstract of the Disclosure An interdigitated transducer (IDT) has parallel electrodes extending inwardly from one voltage rail and parallel electrodes extending inwardly from another voltage rail. The respective electrodes are interleaved to give d region of overlap or apodization within which the SAW is generated or received, the width of the apodized area varying along the length of the IDT. To prevent performance degradation in the event of an open circuit in a non-overlap region, the electrodes associated with a particular voltage rail are additionally linked by a thin conductor positioned near the boundaries between the apodized or overlap region and each of the non-overlap regions.

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